Small Travis tweaks
Small Travis tweaks

- Notify Gitter at start of build
- Fix TERM environment variable

vaibhav345/lenskit,kluver/lenskit,kluver/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,kluver/lenskit,tajinder-txstate/lenskit,vaibhav345/lenskit,tajinder-txstate/lenskit,kluver/lenskit,kluver/lenskit,tajinder-txstate/lenskit,vaibhav345/lenskit